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A054433 as a simple table

n a(n)
1 1
2 4
3 9
4 33
5 80
6 174
7 588
8 1596
9 3135
10 9950
11 28512
12 56268
13 196040
14 496496
15 888300
16 3524577
17 9224880
18 18118362
19 63239220
20 150527400
21 310190454
22 1129200138
23 2971168704
24 5834056536
25 18513646430
26 53213956640
27 104687896833

[1,4,9,33,80,174,588,1596,3135,9950,28512,56268,
 196040,496496,888300,3524577,9224880,18118362,
 63239220,150527400,310190454,1129200138,
 2971168704,5834056536,18513646430,53213956640,
 104687896833]

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Last modified March 29 10:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)